Identify this algae

[PJCulver]

I’m new to saltwater. Tank is almost 5 months old and I’m currently in the “ugly stage.” I have the brown diatoms, but I’m also seeing white fuzzy looking growth on my rocks?? Is this just a white algae or is it something more serious? How should
I treat it?
Thanks in advance!

 

[vetteguy53081]

Video does not play. Still photos will work- Preferably under white light

 

[PJCulver]

Thanks

 

[Sleeping Giant]

Video worked for me.

Not sure, looks like hair algae, but white

 

[Sleeping Giant]

What's on the other side of the hole?

 

[vetteguy53081]

Got video to work. What I believe we see is a tunicate surrounded by Poriferan sponge. Both harmless

 

[PJCulver]

What's on the other side of the hole?

You can probably see sand and the back of the tank. I just took a pic in the hole because it’s easier to see it there.